put this in setup.py to avoid compiling ppc binaries

snippet.sc

	# Stop wasting my time compiling PowerPC-compatible C extensions on my intel Mac
	import distutils.sysconfig
	config = distutils.sysconfig.get_config_vars()
	for key,value in config.iteritems():
		location = str(value).find('-arch ppc')
		if location>=0:
			print "removing '-arch ppc' from %s"%(key)
			config[key] = value.replace('-arch ppc ','')

# Tip from Lisandro Dalcin:
# FYI, in Py>=2.6 the ARCHFLAGS environ var is honored by distutils, so
# you should be able to
#  export ARCHFLAGS='-arch i386' # or '-arch x86_64'
# and get your job done.